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JK250-400U AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

JK250-400U product

JK250-400U

PTC Resettable Fuses

PTCResettable FuseCircuit Protection

The JK250-400U is a radial-leaded PTC resettable fuse rated for 250V operation, providing reliable overcurrent protection for power supplies and industrial circuits.

Best for

  • Power supplies
  • Industrial control systems
  • General overcurrent protection

Avoid if

  • Applications requiring extremely fast response times under 0.5s
  • Environments exceeding 85°C

Check before use

  • Thermal derating based on ambient temperature
  • Maximum fault current limits

Key specifications

Hold Current
400mA
Max Voltage
250V
Trip Current
800mA

Compliance & Environment

RoHS
Compliant
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Power SupplyIndustrial

Datasheet

c741d19cdc938497b9d5fb40e83c58da_2304140030_Jinrui-Electronic-Materials-Co--JK250-400U_C369134.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for JK250-400U: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The JK250-400U is a polymer PTC (Positive Temperature Coefficient) resettable fuse designed for circuit protection. It automatically resets after the fault condition is removed.